Find forecast deviation for following data in a-c

The MileHigh Lodge is a large hotel and casino in Lake Tahoe. The relatively new hotel is two years old and the manager is trying to develop a plan to staff the maintenance department. The hotel's manager wants to use the two years of data below to forecast one month ahead the expected number of maintenance calls. The manager knows that there are a lot of different forecasting techniques and is not sure about which one to use. Develop moving average forecasts for the past 8 months (months 17-24) for K = 2, 3, and 4 months. Enter your calculations in the below table. Which K results in the lowest Mean Absolute Deviation (MAD) over these 8 months? Enter your calculations in the below table. For your recommended K, forecast the number of maintenance calls for the next month (month 25). Place your calculation in the below table